91963417 has 16 divisors (see below), whose sum is σ = 115048192. Its totient is φ = 71565120.

The previous prime is 91963381. The next prime is 91963471. The reversal of 91963417 is 71436919.

It is a cyclic number.

It is not a de Polignac number, because 91963417 - 2¹⁵ = 91930649 is a prime.

It is a super-3 number, since 3×91963417³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91963417.

It is not an unprimeable number, because it can be changed into a prime (91963517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2733 + ... + 13834.

It is an arithmetic number, because the mean of its divisors is an integer number (7190512).

Almost surely, 2^91963417 is an apocalyptic number.

It is an amenable number.

91963417 is a deficient number, since it is larger than the sum of its proper divisors (23084775).

91963417 is a wasteful number, since it uses less digits than its factorization.

91963417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16648.

The product of its digits is 40824, while the sum is 40.

The square root of 91963417 is about 9589.7558363078. The cubic root of 91963417 is about 451.3758991152.

The spelling of 91963417 in words is "ninety-one million, nine hundred sixty-three thousand, four hundred seventeen".